Part 2 1. The same doubled polystyrene cup was used for part 2 of the investigation, and was washed, and dried appropriately, as well as the two 150 cm3 beakers (they were also washed and dried appropriately). The investigation was conducted beneath a fume hood and on the same day.

Theoretical pH values for CH3COOH(aq) and NH3(aq). 1.00M of CH3COOH(aq) Chemical Equation: Necessary formulas: From the Data Booklet, pKa of CH3COOH(aq) is 4.76. Thus, Actually, the formula for dissociation constant for a weak acid is: However, since the [H+] is very, very, very small, the [H+] in ([CH3COOH(aq)] - [H+(aq)] is ignored.

In this experiment the base was NaOH and the acid HCl. The experiment goes on to test the specific heat of NaCl in a similar manner as that of the metal cylinder. Methods To make the calorimeter, two Styrofoam cups are placed together.

As a result, the impurity of the substances cannot account for all the errors in this lab. Purifying the substances beforehand can easily eliminate this source of error. Moving on, there is another reason contributing to the large enthalpy change.

The range of alcohols will be 5 consecutive alcohols from the homologous series; methanol, ethanol, propan-1-ol, butan-1-ol, pentan-1-ol. 1. Dependent The change in temperature of the 100cm3 distilled water when heated by an alcohol lamp. 1. Measure the initial temperature and final temperature using loggerpro.

I repeated the steps from 1 to 9 for other trials of the sample and for the 10, 15, 20 and 25 times fried samples. 10) Use the results of the investigation to determine the effect of frying on fatty acid percentage by the help of calculations.